package cn.smvc.common.utils;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.Vector;

public class HttpUtils {
	
	private String defaultContentEncoding;
	
	public HttpUtils() {  
        this.defaultContentEncoding = Charset.defaultCharset().name();  
    } 
	/** 
     * 发送GET请求 
     *  
     * @param urlString  URL地址 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendGet(String urlString) throws IOException {  
        return this.send(urlString, "GET", null, null);  
    }  
  
    /** 
     * 发送GET请求 
     *  
     * @param urlString  URL地址 
     * @param params 参数集合 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendGet(String urlString, Map<String, String> params) throws IOException {  
        return this.send(urlString, "GET", params, null);  
    }  
  
    /** 
     * 发送GET请求 
     *  
     * @param urlString URL地址 
     * @param params 参数集合 
     * @param propertys 请求属性 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendGet(String urlString, Map<String, String> params, Map<String, String> propertys)  
            throws IOException {  
        return this.send(urlString, "GET", params, propertys);  
    }  
  
    /** 
     * 发送POST请求 
     *  
     * @param urlString URL地址 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendPost(String urlString) throws IOException {  
        return this.send(urlString, "POST", null, null);  
    }  
  
    /** 
     * 发送POST请求 
     *  
     * @param urlString URL地址 
     * @param params 参数集合 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendPost(String urlString, Map<String, String> params) throws IOException {  
        return this.send(urlString, "POST", params, null);  
    }  
  
    /** 
     * 发送POST请求 
     *  
     * @param urlString URL地址 
     * @param params 参数集合 
     * @param propertys 请求属性 
     * @return 响应对象 
     * @throws IOException 
     */  
    public HttpRespons sendPost(String urlString, Map<String, String> params, Map<String, String> propertys)  
            throws IOException {  
        return this.send(urlString, "POST", params, propertys);  
    }  
  
    /** 
     * 发送HTTP请求 
     *  
     * @param urlString 地址 
     * @param method  get/post 
     * @param parameters  添加由键值对指定的请求参数 
     * @param propertys  添加由键值对指定的一般请求属性 
     * @return 响映对象 
     * @throws IOException 
     */  
    private HttpRespons send(String urlString, String method, Map<String, String> parameters,
            Map<String, String> propertys) throws IOException {
        HttpURLConnection urlConnection = null;
  
        if (method.equalsIgnoreCase("GET") && parameters != null) {
            StringBuffer param = new StringBuffer();
            int i = 0;
            for (String key : parameters.keySet()) {
                if (i == 0)
                    param.append("?");
                else
                    param.append("&");
                param.append(key).append("=").append(parameters.get(key));
                i++;
            }
            urlString += param;
        }
  
        URL url = new URL(urlString);
        urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setRequestMethod(method);
        urlConnection.setDoOutput(true);
        urlConnection.setDoInput(true);
        urlConnection.setUseCaches(false);
//        urlConnection.setConnectTimeout(5000);//jdk 1.5换成这个,连接超时
//        urlConnection.setReadTimeout(5000);//jdk 1.5换成这个,读操作超时
  
        if (propertys != null)
            for (String key : propertys.keySet()) {
                urlConnection.addRequestProperty(key, propertys.get(key));  
            }
  
        if (method.equalsIgnoreCase("POST") && parameters != null) {  
            StringBuffer param = new StringBuffer();
            for (String key : parameters.keySet()) {
                param.append("&");
                param.append(key).append("=").append(parameters.get(key));
            }
            urlConnection.getOutputStream().write(param.toString().getBytes());
            urlConnection.getOutputStream().flush();
            urlConnection.getOutputStream().close();
        }
        return this.makeContent(urlString, urlConnection);
    }  
  
    /** 
     * 得到响应对象 
     *  
     * @param urlConnection 
     * @return 响应对象 
     * @throws IOException 
     */  
    private HttpRespons makeContent(String urlString, HttpURLConnection urlConnection) throws IOException {  
        HttpRespons httpResponser = new HttpRespons();  
        try {  
            InputStream in = urlConnection.getInputStream();  
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));  
            httpResponser.contentCollection = new Vector<String>();  
            StringBuffer temp = new StringBuffer();  
            String line = bufferedReader.readLine();  
            while (line != null) {  
                httpResponser.contentCollection.add(line);  
                temp.append(line).append("\r\n");  
                line = bufferedReader.readLine();  
            }  
            bufferedReader.close();  
            String ecod = urlConnection.getContentEncoding();  
            if (ecod == null)  
                ecod = this.defaultContentEncoding;  
            
            httpResponser.urlString = urlString;  
            httpResponser.defaultPort = urlConnection.getURL().getDefaultPort();  
            httpResponser.file = urlConnection.getURL().getFile();  
            httpResponser.host = urlConnection.getURL().getHost();  
            httpResponser.path = urlConnection.getURL().getPath();  
            httpResponser.port = urlConnection.getURL().getPort();  
            httpResponser.protocol = urlConnection.getURL().getProtocol();  
            httpResponser.query = urlConnection.getURL().getQuery();  
            httpResponser.ref = urlConnection.getURL().getRef();  
            httpResponser.userInfo = urlConnection.getURL().getUserInfo();  
            httpResponser.content = new String(temp.toString().getBytes(), ecod);  
            httpResponser.contentEncoding = ecod;  
            httpResponser.code = urlConnection.getResponseCode();  
            httpResponser.message = urlConnection.getResponseMessage();  
            httpResponser.contentType = urlConnection.getContentType();  
            httpResponser.method = urlConnection.getRequestMethod();  
            httpResponser.connectTimeout = urlConnection.getConnectTimeout();  
            httpResponser.readTimeout = urlConnection.getReadTimeout();  
            return httpResponser;  
        } catch (IOException e) {
            throw e;  
        } finally {
            if (urlConnection != null)  
                urlConnection.disconnect();  
        }  
    }  
  
    /** 
     * 默认的响应字符集 
     */  
    public String getDefaultContentEncoding() {  
        return this.defaultContentEncoding;  
    }  
  
      
    /** 
     * 发送GET请求 
     * @param url 
     * @param params 
     * @param headers 
     * @return 
     * @throws Exception 
     */  
    public static URLConnection sendGetRequest(String url,  
            Map<String, String> params, Map<String, String> headers)  
            throws Exception {  
        StringBuilder buf = new StringBuilder(url);  
        Set<Entry<String, String>> entrys = null;  
        // 如果是GET请求，则请求参数在URL中  
        if (params != null && !params.isEmpty()) {  
            buf.append("?");  
            entrys = params.entrySet();  
            for (Map.Entry<String, String> entry : entrys) {  
                buf.append(entry.getKey()).append("=")  
                        .append(URLEncoder.encode(entry.getValue(), "UTF-8"))  
                        .append("&");  
            }  
            buf.deleteCharAt(buf.length() - 1);  
        }  
        URL url1 = new URL(buf.toString());  
        HttpURLConnection conn = (HttpURLConnection) url1.openConnection();  
        conn.setRequestMethod("GET");  
        // 设置请求头  
        if (headers != null && !headers.isEmpty()) {  
            entrys = headers.entrySet();  
            for (Map.Entry<String, String> entry : entrys) {  
                conn.setRequestProperty(entry.getKey(), entry.getValue());  
            }  
        }  
        conn.getResponseCode();  
        return conn;  
    }  
    /** 
     * 发送POST请求 
     * @param url    
     * @param params 
     * @param headers 
     * @return  
     * @throws Exception 
     */  
    public static URLConnection sendPostRequest(String url,  
            Map<String, String> params, Map<String, String> headers)  
            throws Exception {  
        StringBuilder buf = new StringBuilder();  
        Set<Entry<String, String>> entrys = null;  
        // 如果存在参数，则放在HTTP请求体，形如name=aaa&age=10  
        if (params != null && !params.isEmpty()) {  
            entrys = params.entrySet();  
            for (Map.Entry<String, String> entry : entrys) {  
                buf.append(entry.getKey()).append("=")  
                        .append(URLEncoder.encode(entry.getValue(), "UTF-8"))  
                        .append("&");  
            }  
            buf.deleteCharAt(buf.length() - 1);  
        }  
        URL url1 = new URL(url);  
        HttpURLConnection conn = (HttpURLConnection) url1.openConnection();  
        conn.setRequestMethod("POST");  
        conn.setDoOutput(true);  
        OutputStream out = conn.getOutputStream();  
        out.write(buf.toString().getBytes("UTF-8"));  
        if (headers != null && !headers.isEmpty()) {  
            entrys = headers.entrySet();  
            for (Map.Entry<String, String> entry : entrys) {  
                conn.setRequestProperty(entry.getKey(), entry.getValue());  
            }  
        }  
        conn.getResponseCode(); // 为了发送成功  
        return conn;  
    }  
    /** 
     * 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能: 
     *   <FORM METHOD=POST ACTION="http://192.168.0.200:8080/ssi/fileload/test.do" enctype="multipart/form-data"> 
            <INPUT TYPE="text" NAME="name"> 
            <INPUT TYPE="text" NAME="id"> 
            <input type="file" name="imagefile"/> 
            <input type="file" name="zip"/> 
         </FORM> 
     * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.itcast.cn或http://192.168.1.10:8080这样的路径测试) 
     * @param params 请求参数 key为参数名,value为参数值 
     * @param file 上传文件 
     */  
    @SuppressWarnings("resource")
	public static boolean uploadFiles(String path, Map<String, String> params, FormFile[] files) throws Exception{       
        final String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线  
        final String endline = "--" + BOUNDARY + "--\r\n";//数据结束标志  
          
        int fileDataLength = 0;  
        if(files!=null&&files.length!=0){  
            for(FormFile uploadFile : files){//得到文件类型数据的总长度  
                StringBuilder fileExplain = new StringBuilder();  
                fileExplain.append("--");  
                fileExplain.append(BOUNDARY);  
                fileExplain.append("\r\n");  
                fileExplain.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");  
                fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");  
                fileExplain.append("\r\n");  
                fileDataLength += fileExplain.length();  
                if(uploadFile.getInStream()!=null){  
                    fileDataLength += uploadFile.getFile().length();  
                }else{  
                    fileDataLength += uploadFile.getData().length;  
                }  
            }  
        }  
        StringBuilder textEntity = new StringBuilder();  
        if(params!=null&&!params.isEmpty()){  
            for (Map.Entry<String, String> entry : params.entrySet()) {//构造文本类型参数的实体数据  
                textEntity.append("--");  
                textEntity.append(BOUNDARY);  
                textEntity.append("\r\n");  
                textEntity.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");  
                textEntity.append(entry.getValue());  
                textEntity.append("\r\n");  
            }  
        }  
        //计算传输给服务器的实体数据总长度  
        int dataLength = textEntity.toString().getBytes().length + fileDataLength +  endline.getBytes().length;  
          
        URL url = new URL(path);  
        int port = url.getPort()==-1 ? 80 : url.getPort();  
        Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);          
        OutputStream outStream = socket.getOutputStream();  
        //下面完成HTTP请求头的发送  
        String requestmethod = "POST "+ url.getPath()+" HTTP/1.1\r\n";  
        outStream.write(requestmethod.getBytes());  
        String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*\r\n";  
        outStream.write(accept.getBytes());  
        String language = "Accept-Language: zh-CN\r\n";  
        outStream.write(language.getBytes());  
        String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n";  
        outStream.write(contenttype.getBytes());  
        String contentlength = "Content-Length: "+ dataLength + "\r\n";  
        outStream.write(contentlength.getBytes());  
        String alive = "Connection: Keep-Alive\r\n";  
        outStream.write(alive.getBytes());  
        String host = "Host: "+ url.getHost() +":"+ port +"\r\n";  
        outStream.write(host.getBytes());  
        //写完HTTP请求头后根据HTTP协议再写一个回车换行  
        outStream.write("\r\n".getBytes());  
        //把所有文本类型的实体数据发送出来  
        outStream.write(textEntity.toString().getBytes());           
        //把所有文件类型的实体数据发送出来  
        if(files!=null&&files.length!=0){  
            for(FormFile uploadFile : files){  
                StringBuilder fileEntity = new StringBuilder();  
                fileEntity.append("--");  
                fileEntity.append(BOUNDARY);  
                fileEntity.append("\r\n");  
                fileEntity.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");  
                fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");  
                outStream.write(fileEntity.toString().getBytes());  
                if(uploadFile.getInStream()!=null){  
                    byte[] buffer = new byte[1024];  
                    int len = 0;  
                    while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1){  
                        outStream.write(buffer, 0, len);  
                    }  
                    uploadFile.getInStream().close();  
                }else{  
                    outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);  
                }  
                outStream.write("\r\n".getBytes());  
            }  
        }  
        //下面发送数据结束标志，表示数据已经结束  
        outStream.write(endline.getBytes());  
        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));  
        if(reader.readLine().indexOf("200")==-1){//读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败  
            return false;  
        }  
        outStream.flush();  
        outStream.close();  
        reader.close();  
        socket.close();  
        return true;  
    }  
    /**  
     * 提交数据到服务器  
     * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.itcast.cn或http://192.168.1.10:8080这样的路径测试)  
     * @param params 请求参数 key为参数名,value为参数值  
     * @param file 上传文件  
     */  
    public static boolean uploadFile(String path, Map<String, String> params, FormFile file) throws Exception{  
       return uploadFiles(path, params, new FormFile[]{file});  
    }  
    /** 
     * 将输入流转为字节数组 
     * @param inStream 
     * @return 
     * @throws Exception 
     */  
    public static byte[] read2Byte(InputStream inStream)throws Exception{  
        ByteArrayOutputStream outSteam = new ByteArrayOutputStream();  
        byte[] buffer = new byte[1024];  
        int len = 0;  
        while( (len = inStream.read(buffer)) !=-1 ){  
            outSteam.write(buffer, 0, len);  
        }  
        outSteam.close();  
        inStream.close();  
        return outSteam.toByteArray();  
    }  
    /** 
     * 将输入流转为字符串 
     * @param inStream 
     * @return 
     * @throws Exception 
     */  
    public static String read2String(InputStream inStream)throws Exception{  
        ByteArrayOutputStream outSteam = new ByteArrayOutputStream();  
        byte[] buffer = new byte[1024];  
        int len = 0;  
        while( (len = inStream.read(buffer)) !=-1 ){  
            outSteam.write(buffer, 0, len);  
        }  
        outSteam.close();  
        inStream.close();  
        return new String(outSteam.toByteArray(),"UTF-8");  
    }  
    /** 
     * 发送xml数据 
     * @param path 请求地址 
     * @param xml xml数据 
     * @param encoding 编码 
     * @return 
     * @throws Exception 
     */  
    public static byte[] postXml(String path, String xml, String encoding) throws Exception{  
        byte[] data = xml.getBytes(encoding);  
        URL url = new URL(path);  
        HttpURLConnection conn = (HttpURLConnection)url.openConnection();  
        conn.setRequestMethod("POST");  
        conn.setDoOutput(true);  
        conn.setRequestProperty("Content-Type", "text/xml; charset="+ encoding);  
        conn.setRequestProperty("Content-Length", String.valueOf(data.length));  
        conn.setConnectTimeout(5 * 1000);  
        OutputStream outStream = conn.getOutputStream();  
        outStream.write(data);  
        outStream.flush();  
        outStream.close();  
        if(conn.getResponseCode()==200){  
            return read2Byte(conn.getInputStream());  
        }  
        return null;  
    }  
    //测试函数  
    public static void main(String args[]) throws Exception {  
        Map<String, String> params = new HashMap<String, String>();  
        params.put("name", "xiazdong");  
        params.put("age", "10");  
        HttpURLConnection conn = (HttpURLConnection)  
                sendGetRequest(  
                        "http://192.168.2.207:8080/cesc/cesc/pages/main/ctrl?FUNC_ID=handleStaffAttendanceService",  
                        params, null);  
        int code = conn.getResponseCode();  
        InputStream in = conn.getInputStream();  
        byte[]data = read2Byte(in);
        
        System.out.println("code==>" + code);
        System.out.println(new String(data));
    }  
      
    /** 
     * 设置默认的响应字符集 
     */  
    public void setDefaultContentEncoding(String defaultContentEncoding) {  
        this.defaultContentEncoding = defaultContentEncoding;  
    }  
}
